Reorder CI steps to set up Python before installing uv

Author: CodebyKumar

.github/workflows/ci.yml

@@ -16,11 +16,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install uv
-        uses: astral-sh/setup-uv@v3
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v3
+
       - name: Install (base, zero required deps)
         run: uv sync --python ${{ matrix.python-version }}
 
@@ -36,13 +39,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install uv
-        uses: astral-sh/setup-uv@v3
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
           python-version: "3.12"
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v3
+
       - name: Install (all extras)
-        run: uv sync --all-extras
+        run: uv sync --python 3.12 --all-extras
 
       - name: Run full suite including slow tests
         run: uv run pytest -m ""